Infrared spectra and molecular constants of N14O2 and N15O2
β Scribed by Edward T. Arakawa; Alvin H. Nielsen
- Book ID
- 107800962
- Publisher
- Elsevier Science
- Year
- 1958
- Tongue
- English
- Weight
- 890 KB
- Volume
- 2
- Category
- Article
- ISSN
- 0022-2852
No coin nor oath required. For personal study only.
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## Abstract The 5βmethyl(^15^N~2~)[__O__^2^,__O__^4^β^17^O~2~]uridine (= (^15^N~2~)[__O__^2^,__O__^4^β^17^O ~2~]ribosylthymine; 15) was synthesized and analyzed by ^15^Nβ and ^17^OβNMR spectroscopy. (^15^N~2~)Urea was condensed with 2,3βdibromoβ2βmethylpropanoyl chloride (3) and cyclized to form (^
## Abstract A general synthetic approach for the synthesis of ^15^Nβ and ^17^Oβdoubly labelled pyrimidine nucleosides is described. The ^15^N isotopes in uridine and the ^17^O isotope in the ureaβderived carbonyl group of uridine and cytidine originate from (^15^N~2~)[^17^O]urea (5) which was synth